Stack-Based Buffer Overflow in IBM AIX and PowerVM
CVE-2026-17122

9.8CRITICAL

Key Information:

Vendor

IBM
Status
Aix
Powervm ViOS
Vendor
CVE Published:
20 August 2026

What is CVE-2026-17122?

IBM AIX versions 7.2 and 7.3, along with IBM PowerVM VIOS version 4.1, are affected by a significant vulnerability that allows remote attackers to exploit a stack-based buffer overflow. This flaw could enable unauthorized remote code execution, potentially compromising the integrity and confidentiality of affected systems. It is crucial for users and administrators to apply relevant patches provided by IBM to mitigate the risks associated with this vulnerability.

Affected Version(s)

AIX 7.2

AIX 7.3

PowerVM VIOS 4.1

References

https://www.ibm.com/support/pages/node/7283858
vendor-advisorypatch

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

CVE-2026-14970, CVE-2026-15061, CVE-2026-15078, CVE-2026-15065, CVE-2026-15068 were reported to IBM by Oneconsult AG (https://oneconsult.com/).
.